[INFO] updating cached repository yarrow/slightly-smaller-setop-for-question
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yarrow/slightly-smaller-setop-for-question
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yarrow/slightly-smaller-setop-for-question" "work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yarrow/slightly-smaller-setop-for-question" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yarrow/slightly-smaller-setop-for-question"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yarrow/slightly-smaller-setop-for-question'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4230686b714bd32da42d35f6af8d140c7ab8bcf
[INFO] sha for GitHub repo yarrow/slightly-smaller-setop-for-question: c4230686b714bd32da42d35f6af8d140c7ab8bcf
[INFO] validating manifest of yarrow/slightly-smaller-setop-for-question on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yarrow/slightly-smaller-setop-for-question on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yarrow/slightly-smaller-setop-for-question
[INFO] finished frobbing yarrow/slightly-smaller-setop-for-question
[INFO] frobbed toml for yarrow/slightly-smaller-setop-for-question written to work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question/Cargo.toml
[INFO] started frobbing yarrow/slightly-smaller-setop-for-question
[INFO] finished frobbing yarrow/slightly-smaller-setop-for-question
[INFO] frobbed toml for yarrow/slightly-smaller-setop-for-question written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yarrow/slightly-smaller-setop-for-question/Cargo.toml
[INFO] crate yarrow/slightly-smaller-setop-for-question already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yarrow/slightly-smaller-setop-for-question against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2534494eb44ee0890fb71c9bba54d13c0a87a69e58935ff9fad16939c076ba0e
[INFO] running `"docker" "start" "-a" "2534494eb44ee0890fb71c9bba54d13c0a87a69e58935ff9fad16939c076ba0e"`
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling rental-impl v0.5.2
[INFO] [stderr]    Compiling rental v0.5.2
[INFO] [stderr]    Compiling minimal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.28s
[INFO] running `"docker" "inspect" "2534494eb44ee0890fb71c9bba54d13c0a87a69e58935ff9fad16939c076ba0e"`
[INFO] running `"docker" "rm" "-f" "2534494eb44ee0890fb71c9bba54d13c0a87a69e58935ff9fad16939c076ba0e"`
[INFO] [stdout] 2534494eb44ee0890fb71c9bba54d13c0a87a69e58935ff9fad16939c076ba0e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f152ff2f65245cc198a255156750e6422652c0a1927cab506f1815af7b5c7eb0
[INFO] running `"docker" "start" "-a" "f152ff2f65245cc198a255156750e6422652c0a1927cab506f1815af7b5c7eb0"`
[INFO] [stderr]    Compiling minimal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "f152ff2f65245cc198a255156750e6422652c0a1927cab506f1815af7b5c7eb0"`
[INFO] running `"docker" "rm" "-f" "f152ff2f65245cc198a255156750e6422652c0a1927cab506f1815af7b5c7eb0"`
[INFO] [stdout] f152ff2f65245cc198a255156750e6422652c0a1927cab506f1815af7b5c7eb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yarrow/slightly-smaller-setop-for-question:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] db33107ed5f981afda4f7fa496430f8c8c30ddce11ad5c0a87be15c99d3dcbc4
[INFO] running `"docker" "start" "-a" "db33107ed5f981afda4f7fa496430f8c8c30ddce11ad5c0a87be15c99d3dcbc4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minimal-dcceedc78c630860
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "db33107ed5f981afda4f7fa496430f8c8c30ddce11ad5c0a87be15c99d3dcbc4"`
[INFO] running `"docker" "rm" "-f" "db33107ed5f981afda4f7fa496430f8c8c30ddce11ad5c0a87be15c99d3dcbc4"`
[INFO] [stdout] db33107ed5f981afda4f7fa496430f8c8c30ddce11ad5c0a87be15c99d3dcbc4